TROUBLESHOOTING

qInsert the tabs on the needle plate cover into the needle plate, and then slide the cover back on.

Note

•If the needle plate has been removed it is especially important to reinstall the needle plate and tighten the screws prior to installing the bobbin case.

rCheckinstall it.the condition of the needle, and then

If the needle is in a poor condition, for example, if it is bent, be sure to install a new needle.

*Refer to “CHANGING THE NEEDLE” on page B-57.

CAUTION

•Never use bent needles. Bent needles can easily break, possibly resulting in injuries.

Note

•After completing this procedure, continue with the following procedure in “Checking machine operations” to check that the machine is operating correctly.

Memo

•Since the needle may have been damaged when the fabric was caught in the machine, we recommend replacing it with a new one.

■Checking machine operations

If the needle plate has been removed, check machine operations to confirm that installation has been completed correctly.

aTurn on the machine.

bSelect .

Note

•Do not yet install the presser foot and thread.

cSlowly turn the handwheel toward you (counterclockwise), and look from all sides to check that the needle falls at the center of the hole in the needle plate.

If the needle contacts the needle plate, remove the needle plate, and then install it again, starting with step min “Removing the fabric from the machine” on page A-28.

aHole in the needle plate

bHandwheel

dSelect zigzag stitch

. At this time,

increase the stitch length and width to their maximum settings.

eSlowly turn the handwheel toward you (counterclockwise) and check that the needle bar and feed dogs operate correctly.

If the needle or feed dogs contact the needle plate, the machine may be malfunctioning; therefore, contact your dealer or nearest authorized service center.

fTurn off the machine, and then install the bobbin and presser foot.

* Refer to “Setting the Bobbin” and “CHANGING THE PRESSER FOOT” on page B-55.

gCorrectly thread the machine.

*For details on the machine, refer to “Upper Threading” on page B-48.

Note

•The thread may have become tangled as a result of incorrect upper threading. Make sure that the machine is correctly threaded.

hPerform trial sewing with normal fabric.

Note

•Incorrect sewing may be the result of incorrect upper threading or sewing thin fabrics. If there are poor results from the trial sewing, check the upper threading or the type of fabric being used.

A

2

Troubleshooting and Maintenance

Appendix A-29